CN111383543A

CN111383543A - OLED display panel and intelligent terminal

Info

Publication number: CN111383543A
Application number: CN201811643263.9A
Authority: CN
Inventors: 郑敏; 高洪; 金武谦; 赵勇
Original assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2020-07-07
Anticipated expiration: 2038-12-29
Also published as: CN111383543B; WO2020133821A1; US11374061B2; CN114694524A; US20210359031A1; CN114694524B

Abstract

The invention discloses an OLED display panel, which comprises an electronic element area for placing sensor elements and a pixel area; the pixel area is provided with at least one light-transmitting area, and the electronic element area corresponds to the position of the at least one light-transmitting area; the pixel area is also provided with a plurality of sub-pixels, and the pixel density of the sub-pixels is gradually reduced towards the center of the pixel area, so that the visual difference between the pixel area and the display area in the OLED display panel is reduced.

Description

OLED display panel and intelligent terminal

Technical Field

The invention relates to the technical field of display panels, in particular to an OLED display panel and an intelligent terminal.

Background

At present, mobile phone display screens in the market are in a trend of comprehensive screens, such as a "bang screen" and a "water drop screen", so that a cutting area of a non-display area of the screen is gradually reduced. To further reduce the cut area, a hole is dug in the pixel area and a sensor element is placed under the screen at a position corresponding to the hole. In order to vacate the hole digging area in the pixel area, at least one sub-pixel of the pixel area needs to be removed or the area of the at least one sub-pixel needs to be reduced, so that the number or the size of the sub-pixels of the pixel area and the display area is different, the pixel density of the pixel area and the display area is different, and the luminous efficiency of the pixel area and the display area is obviously different.

Disclosure of Invention

The embodiment of the invention provides an OLED display panel and an intelligent terminal, and aims to solve the problem that the difference of the luminous efficiency of a pixel area and the luminous efficiency of a display area in the conventional display panel is too large.

The embodiment of the invention provides an OLED display panel, which comprises an electronic element area and a pixel area, wherein the electronic element area is used for placing a sensor element; the pixel area is provided with at least one light-transmitting area, and the electronic element area corresponds to the position of the at least one light-transmitting area;

a plurality of sub-pixels are also arranged in the pixel region, and the pixel density of the sub-pixels gradually decreases in a direction toward the center of the pixel region.

Further, the area of the sub-pixels is gradually decreased in a direction toward the center of the pixel region, so that the pixel density of the sub-pixels is gradually decreased.

Furthermore, a pixel gap is formed between adjacent sub-pixels, and the light-transmitting area is arranged in the pixel gap;

in the direction towards the center of the pixel area, the pixel gap is gradually increased, and the number and the area of the light-transmitting areas are gradually increased.

Further, the number of the sub-pixels is gradually reduced in a direction toward the center of the pixel region, so that the pixel density of the sub-pixels is gradually reduced.

Furthermore, at least one sub-pixel area is arranged in the pixel area, and the light-transmitting area is correspondingly arranged in the sub-pixel area;

in the direction towards the center of the pixel area, the number of the sub-pixel areas is gradually increased, and the number of the light-transmitting areas is gradually increased.

Further, in a direction toward the center of the pixel region, the area and the number of the sub-pixels are alternately decreased, so that the pixel density of the sub-pixels is gradually decreased.

Further, the pixel region is divided into at least one first region and at least one second region;

the first regions and the second regions are alternately arranged in a direction toward the center of the pixel region, and the area of the sub-pixels in the first region is gradually reduced and the number of the sub-pixels in the second region is gradually reduced.

Further, a pixel gap is formed between adjacent sub-pixels in the first area, and a light-transmitting area in the first area is arranged in the pixel gap;

in the direction towards the center of the pixel area, the pixel gap in the first area is gradually increased, and the number and the area of the light-transmitting areas in the first area are gradually increased.

Furthermore, at least one sub-pixel area is arranged in the second area, and a light-transmitting area in the second area is correspondingly arranged in the sub-pixel area;

the number of the sub-pixel regions in the second region is gradually increased and the number of the light-transmitting regions is gradually increased in a direction toward the center of the pixel region.

Further, the OLED display panel further includes a display region disposed outside the pixel region, in which a plurality of sub-pixels are arranged;

the pixel density of the sub-pixels of the display area is greater than the pixel density of the sub-pixels of the pixel area.

The embodiment of the invention also provides an intelligent terminal, which comprises a sensor element and the OLED display panel;

the sensor element is arranged in an electronic element area on the back surface of the OLED display panel.

The invention has the beneficial effects that: after the pixel area is provided with the light-transmitting area, the pixel density of the sub-pixels arranged in the pixel area is gradually reduced in the direction towards the center of the pixel area, so that the pixel density of the pixel area is prevented from suddenly changing, the difference of the luminous efficiency of the pixel area and the luminous efficiency of the display area is further prevented from being too large, and the visual difference between the pixel area and the display area is reduced.

Drawings

In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an OLED display panel according to an embodiment of the present invention;

FIG. 2 is a layout diagram of a pixel region and a display region of an OLED display panel according to an embodiment of the present invention;

FIG. 3 is another distribution diagram of a pixel area and a display area of an OLED display panel according to an embodiment of the present invention;

FIG. 4 is a diagram of a distribution of a pixel area and a display area of an OLED display panel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an intelligent terminal according to an embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for illustrating the invention and enabling those skilled in the art to fully describe the technical contents of the present invention so that the technical contents of the present invention can be more clearly and easily understood. The present invention may, however, be embodied in many different forms of embodiments and the scope of the present invention should not be construed as limited to the embodiments set forth herein.

The terms used in the description of the present invention are only used to describe specific embodiments, and are not intended to show the concept of the present invention. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as taught in the present specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof. Like reference symbols in the various drawings indicate like elements.

As shown in fig. 1, the OLED display panel includes a display area 10 and a pixel area (O-cut area) 20, and the pixel area 20 may be a circular area or an area with other shapes. As shown in fig. 2, the left side of the boundary line C is the display area 10, and the right side of the boundary line C is the pixel area 20. The bottom of the OLED display panel is provided with an electronic component area (not shown in the drawings) for placing a sensor element, such as a sensing unit of a camera. The electronic element region corresponds to the pixel region 20. At least one light-transmitting area 21 is formed in the pixel area 20, and the electronic component area corresponds to the at least one light-transmitting area 21, so that the light transmittance of the electronic component area is improved, a sensor element can be placed in the electronic component area, and the display screen occupation ratio is increased.

The light-transmitting region 21 may be a through hole filled with a transparent material, and the transparent material may be silicone (siloxane), transparent Polyimide (CPI), or the like.

Further, a plurality of sub-pixels 11 are arranged in the display area 10, a plurality of sub-pixels 22 are arranged in the pixel area 20, and each of the

sub-pixels

11 and 22 includes a blue sub-pixel B, a red sub-pixel R, a green sub-pixel G, or the like. In the pixel region 20, the pixel density of the sub-pixels 22 gradually decreases in a direction toward the center of the pixel region 20. It should be noted that although the pixel density of the pixel region 20 changes, the overall light emitting effect of the pixel region 20 remains unchanged, and the purpose of keeping the overall light emitting effect of the pixel region 20 unchanged can be achieved by increasing the light emitting intensity of the sub-pixels 22.

As shown in fig. 2, the position O is defined as the center position of the pixel region 20, and the direction of the boundary line C toward the position O is defined as the direction a toward the center of the pixel region 20. In the direction a, the sub-pixels 22 are arranged in a gradient manner, that is, the closer to the position O, the smaller the pixel density of the sub-pixels 22 is, and the closer to the boundary C, the greater the pixel density of the sub-pixels 22 is. In addition, the pixel density of the sub-pixels 11 of the display area 10 is greater than the pixel density of the sub-pixels 22 of the pixel area 20. In this embodiment, the pixel density of the sub-pixels in the pixel area changes in a gradual change manner, so that the problem of excessive difference in light emitting efficiency between the pixel area and the display area due to abrupt change of the pixel density of the pixel area can be avoided, and the visual difference between the pixel area and the display area is reduced.

In a specific embodiment, as shown in fig. 2, the number of the sub-pixels 22 is kept constant in the direction a toward the center of the pixel region 20, but the area of the sub-pixels 22 is gradually reduced, so that the pixel density of the sub-pixels 22 is gradually reduced. Specifically, in the direction a, the area of the sub-pixels having the same color gradually decreases, for example, the area of the blue sub-pixel B near the position O is smaller than the area of the blue sub-pixel B near the boundary C, the area of the red sub-pixel R near the position O is smaller than the area of the red sub-pixel R near the boundary C, and the area of the green sub-pixel G near the position O is smaller than the area of the green sub-pixel G near the boundary C.

Further, as shown in fig. 2, a pixel gap is formed between adjacent sub-pixels 22, and the light-transmitting region 21 is disposed in the pixel gap. In a direction a toward the center of the pixel region, the pixel gap gradually increases, and the number and area of the light-transmitting regions 21 gradually increases. Specifically, in the direction a, the number of the sub-pixels 22 is kept constant, and the area of the sub-pixels 22 is gradually reduced, so that the pixel gap between the sub-pixels 22 is gradually increased, and the light-transmitting regions 21 are arranged at appropriate positions of the pixel gap, so that the number and size of the light-transmitting regions 21 are also gradually changed, that is, the closer to the position O, the larger the number and area of the pixel gap and the light-transmitting regions 21 is, and the closer to the boundary C, the smaller the number and area of the pixel gap and the light-transmitting regions 21 is.

In another specific embodiment, as shown in fig. 3, the area of the sub-pixels 22 is kept constant in the direction a toward the center of the pixel region 20, but the number of the sub-pixels 22 is gradually decreased, so that the pixel density of the sub-pixels 22 is gradually decreased. Specifically, in the direction a, the number of sub-pixels 22 near the position O is smaller than the number of sub-pixels 22 near the boundary C.

Further, as shown in fig. 3, at least one sub-pixel region 23 is further disposed in the pixel region 20, and the number of the sub-pixel regions 23 is the same as that of the light-transmitting regions 21, so that the light-transmitting regions 21 can be correspondingly disposed in the sub-pixel regions 23. Note that the sub-pixels 22 are originally disposed in the sub-pixel region 23, and the light-transmitting region 21 is disposed in the sub-pixel region 23 to remove the sub-pixels 22 in the sub-pixel region 23. For example, the 9 sub-pixel regions 23 in fig. 3 are originally filled with 3 green sub-pixels G, 3 blue sub-pixels B, and 2 red sub-pixels R, and the 9 sub-pixels are removed by disposing the light-transmitting region 21 in the 9 sub-pixel regions. The number of the sub-pixels 22 in the pixel region 20 is reduced, so that the pixel density of the sub-pixels 22 in the pixel region 20 is less than that of the sub-pixels 11 in the display region 10.

In a direction a toward the center of the pixel region, the number of the sub-pixel regions 23 is gradually increased, and the number of the light-transmitting regions 21 is gradually increased. Specifically, in the direction a, the area of the sub-pixel 22 is kept constant, and the number of the sub-pixel regions 23 provided with the light-transmitting regions is gradually increased, so that the number of the light-transmitting regions 21 is also gradually changed, that is, the closer to the position O, the larger the number of the sub-pixel regions 23 provided with the light-transmitting regions and the number of the light-transmitting regions 21 are, and the closer to the boundary C, the smaller the number of the sub-pixel regions 23 provided with the light-transmitting regions and the number of the light-transmitting regions 21 are.

In yet another specific embodiment, as shown in fig. 4, the area and the number of the sub-pixels 22 are alternately decreased in a direction a toward the center of the pixel region 20, so that the pixel density of the sub-pixels 22 is gradually decreased. Specifically, the pixel region 20 is divided into at least one first region and at least one second region, and the first region and the second region are alternately arranged in a direction a toward the center of the pixel region 20. As shown in fig. 4, the pixel region 20 is divided into 2 first regions and 2 second regions, the region between the boundary line C and the virtual line C1 being the first region, the region between the virtual line C1 and the virtual line C2 being the second region, the region between the virtual line C2 and the virtual line C3 being the first region, and the region between the virtual line C3 and the position O being the second region.

Further, in the direction a toward the center of the pixel region 20, the area of the sub-pixels in the first region gradually decreases, and the number of sub-pixels in the second region gradually decreases.

Specifically, in the direction a, the number of sub-pixels 22 in the first region remains unchanged, but the area of the sub-pixels 22 gradually decreases. For example, the area of the sub-pixels 22 in the first region between the virtual line C2 and the virtual line C3 is smaller than the area of the sub-pixels in the first region between the boundary line C and the virtual line C1. Further, adjacent sub-pixels 22 in the first region have a pixel gap therebetween, and the light-transmitting region 21 is disposed in the pixel gap. In a direction a toward the center of the pixel region, the pixel gap gradually increases, and the number and area of the light-transmitting regions 21 gradually increases. For example, the number and area of the pixel gaps and the light-transmitting regions 21 in the first region between the virtual line C2 and the virtual line C3 are smaller than the number and area of the pixel gaps and the light-transmitting regions 21 in the first region between the boundary line C and the virtual line C1, respectively.

Specifically, in the direction a, the area of the sub-pixels 22 in the second region remains unchanged, but the number of sub-pixels 22 gradually decreases. For example, the number of sub-pixels in the second region between the virtual line C3 and the position O is smaller than the number of sub-pixels in the second region between the virtual line C1 and the virtual line C2. Furthermore, at least one sub-pixel region is further arranged in the second region, and the number of the sub-pixel regions is the same as that of the light-transmitting regions 21, so that the light-transmitting regions 21 can be correspondingly arranged in the sub-pixel regions. In the direction a, the number of sub-pixel regions gradually increases, and the number of light-transmitting regions 21 gradually increases. For example, the numbers of the sub-pixel regions and the light-transmitting regions 21 in the second region between the virtual line C3 and the position O are smaller than the numbers of the sub-pixel regions and the light-transmitting regions 21 in the second region between the virtual line C1 and the virtual line C2, respectively.

In the OLED display panel in this embodiment, after the light-transmitting area is disposed in the pixel area, the pixel density of the sub-pixels arranged in the pixel area is gradually reduced in the direction toward the center of the pixel area, so that abrupt change of the pixel density in the pixel area is avoided, and further, an excessive difference in the light emitting efficiency between the pixel area and the display area is avoided, thereby reducing the visual difference between the pixel area and the display area.

Fig. 5 is a schematic structural diagram of an intelligent terminal according to an embodiment of the present invention. The smart terminal includes a sensor element 51 and an OLED display panel 52. The OLED display panel 52 is an OLED panel in the above embodiments, and details thereof are not repeated herein.

The sensor element 51 is disposed in an electronic element area 53 on the back surface of the OLED display panel 52, and the electronic element area 53 may be a groove on the back surface of the OLED display panel 52, that is, the sensor element 51 may be disposed in the groove on the back surface of the OLED display panel 52. The electronic element region 53 is disposed corresponding to the light-transmitting region 21 in the pixel region, so that the sensor element 51 is disposed corresponding to the light-transmitting region 21. The sensor element 51 may be a sensor unit of a camera, among others.

The intelligent terminal in this embodiment can set up the printing opacity district in the pixel district after, in the orientation in the central direction in pixel district, make the pixel density of the sub-pixel who arranges in the pixel district reduce gradually, avoid the pixel density sudden change in pixel district, and then avoid the luminous efficiency difference of pixel district and display area too big to reduce the visual difference between pixel district and the display area.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. An OLED display panel is characterized by comprising an electronic element area for placing sensor elements and a pixel area; the pixel area is provided with at least one light-transmitting area, and the electronic element area corresponds to the position of the at least one light-transmitting area;

2. The OLED display panel according to claim 1, wherein the area of the sub-pixels is gradually decreased in a direction toward the center of the pixel region such that the pixel density of the sub-pixels is gradually decreased.

3. The OLED display panel of claim 2, wherein adjacent sub-pixels have a pixel gap therebetween, and the light-transmissive region is disposed in the pixel gap;

4. The OLED display panel according to claim 1, wherein the number of the sub-pixels is gradually decreased in a direction toward a center of the pixel region such that a pixel density of the sub-pixels is gradually decreased.

5. The OLED display panel according to claim 4, wherein the pixel region further comprises at least one sub-pixel region, and the light-transmissive region is correspondingly disposed in the sub-pixel region;

6. The OLED display panel according to claim 1, wherein the area and the number of the sub-pixels are alternately decreased in a direction toward the center of the pixel region such that the pixel density of the sub-pixels is gradually decreased.

7. The OLED display panel of claim 6, wherein the pixel area is divided into at least one first area and at least one second area;

8. The OLED display panel of claim 7, wherein adjacent sub-pixels in the first region have a pixel gap therebetween, and the light transmissive region in the first region is disposed in the pixel gap;

9. The OLED display panel of claim 7, wherein the second region has at least one sub-pixel region, and the light-transmissive region of the second region is correspondingly disposed in the sub-pixel region;

10. The OLED display panel according to claim 1, further comprising a display region disposed outside the pixel region, the display region having a plurality of sub-pixels arranged therein;

11. An intelligent terminal, comprising a sensor element and the OLED display panel according to any one of claims 1 to 10;